DMA (Direct Memory Access) General

DMA (Direct Memory Access) is the equivalent of PIO. It reduces the CPU load by using a memory controller to perform data transfers directly from the host adapter to system memory. Historically single-word DMA was by-passed by multi-word DMA which was by-passed by ultra DMA UDMA.

Comments? Let us know!   ATAREF/2 (C) 2007-2009 WTY Soft. All rights reserved (legal).